CN2517087Y

CN2517087Y - Cooling device for transformer

Info

Publication number: CN2517087Y
Application number: CN 01276847
Authority: CN
Inventors: 朱得文; 陆万烈
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-12-20
Filing date: 2001-12-20
Publication date: 2002-10-16
Anticipated expiration: 2011-12-20

Abstract

The utility model relates to a radiator for an oil-immersed power transformer. The radiator realizes a heat dissipation function via a cooling fin set which is assembled by a two-piece double-row structure with an inner edge welded, an outer edge kinked into a circular arc shaped hollow and an air chute arranged in the middle. The utility model has the advantages of long service life, steady output power and good heat dissipation effect, and fitting to be used as a radiator for a power transformer.

Description

Radiator for transformer

The utility model relates to a kind of oil-immersed power transformer radiator.

Now, in some oil-immersed power transformers, a kind of gilled radiator commonly used, wide because of its lamellar body, the front can not ventilate, and the temperature in the middle of causing obviously raises than the temperature on both sides, causes the radiating efficiency of this transformer low; On the other hand, because of there is weld seam on its lamellar body both sides, influence the radiating effect of transformer.This radiator, poor because of its integral heat sink efficient, influenced the power output of transformer, quickened ageing of insulation, can shorten service life, increase the insecurity factor.

The purpose of this utility model is to provide a kind of fin to be arranged as two double-row type structures, and the centre is provided with air duct, the inner edge welding, and outer rim is bent into the fit radiator for transformer of forming of groups of fins of circular arc, to enlarge contact area, improves radiating efficiency.

The technical solution of the utility model is: a kind of radiator for transformer with fin, oil collecting pipe, oil collection box, oil box, case lid and foot rest, fin wherein is inner edge welding, outer rim is bent into the hollow plates of circular arc, these plates are made two biserials at least and are arranged, and the centre is provided with air duct; By the synthetic one group of groups of fins of some groups of fins, this groups of fins up and down respectively by oil-in and oil-out and up and down oil collection box be docked and connected; Described radiator is made up of two groups of groups of fins at least.

Its technical scheme can be: oil collecting pipe wherein is a pipe or square tube, and this pipe is connected on the oil collection box, and described oil collecting pipe has several slotted holes that docks with the aperture of oil collection box.

Its technical scheme can also be: oil collection box wherein takes the shape of the letter U, and the aperture of docking with oil collecting pipe that its top is offered forms oil flows to the both sides fin through oil collection box from oil collecting pipe passage.

Oil box wherein is made up of base plate, wallboard and lid edge, the circular hole that has the excessive pipe of connection up and down of described wallboard, and an end of described excessive pipe is connected on the circular hole, and the other end is the connection orchid in succession.

Case lid wherein is located at the top of oil box, and the edge is provided with some screws that are connected with oil box, and fixed support and other annexes that transformer can be installed are set on the plate face of this case lid.

Two double-row type structures of heat sink design of the present utility model, the centre is provided with air duct, makes its ventilative property good, the radiating effect height, comparable plain edition radiator improves 20%, can prolong service life, guarantees the stable of power output; The outer rim of fin does not have weld seam, can reduce leak source, strengthens fail safe; Concavo-convex hollow sheet fin is set, can increases the contact area of air, improve radiating effect.

Now described in conjunction with the accompanying drawings and embodiments.

Fig. 1 is the utility model end view.

Fig. 2 is the fit schematic perspective view of groups of fins.

Fig. 3 is the schematic diagram that shows arrangement mode with the cross section of fin,

Fig. 4 is oil collecting pipe vertical section figure.

Fig. 5 is the oil collection box sectional elevation, and A-A is for analysing and observe direction.

Fig. 6 is that oil collection box is along the A-A direction cutaway view among Fig. 5.

Fig. 1 shows that fin 2 is distributed in the both sides of oil box 5, and it is connected with oil collection box 9 and oil collecting pipe 6 up and down, is connected with excessive pipe 8 and adpting flange 3 by being located at the circular hole of being offered about oil box 5 sidewalls, makes it to form the turnover circulation canal of oil.Interior outer rim at fin 2 is provided with stiffener 7, to strengthen the integral rigidity of groups of fins zoarium, improves its working strength.On the top of oil box 5 case lid 4 is set, can makes things convenient for fixed support and other annexes that transformer is installed on demand.Be provided with foot rest 1 in the bottom of casing, to be used for installing and fixing and the usefulness of convenient transportation of transformer.

Among Fig. 2, oil collection box 9 is positioned at bottom on the transformer with oil collecting pipe 6, and oil collecting pipe 6 is positioned at the upper and lower end of oil collection box 9 for pipe, and fin 2 distributes perpendicular to the both sides of this oil collecting pipe, is communicated with oil collection box 9 up and down by oil-in and oil-out.

At Fig. 3, a row oil collection box 9 is set on the oil collecting pipe 6, on each oil collection box 9, fin 2 is left and right two two row and is symmetrically distributed, and about having formed, the air duct 14 of front and back intermediate connection is to improve the heat-sinking capability of fin 2.

See Fig. 4, the slotted hole 13 in the oil collecting pipe 6 is docked and connected with the aperture 10 in the oil collection box 9, and an end of pipe is with cover plate for sealing, and the other end is connected with adpting flange 3.

The aperture 10 at Fig. 5 display set oil box 9 tops is tightly connected, the bottom distribute two fin 2 and with the oil-in 11 and the oil-out 12 of the fin 2 (correspondence position of 12 among the figure below 11 that be tightly connected, so do not indicate), formation is led to the turnover oil passage of both sides fin 2 from oil collecting pipe 6 by oil collection box 9, the slotted hole 13 of described aperture 10 and oil collecting pipe 6 be docked and connected (the two is overlapping among the figure).

The U-shaped shape of Fig. 6 display set oil box 9, the base opening part docks with fin 2, and the space is sealed, and the both sides of box seal with end casing, more see the form of its U-shaped along the A-A section among Fig. 5.

During installation, earlier case lid 4 is opened, had or not foreign matter in the inspection oil box 5, then, in fuel tank, fill with transformer oil, and after checking whether leakage of oil, the assembly work that enters next step transformer He other annexes again.After transformer coil and other accessories have assembled, case lid 4 is fastened on the case edge of oil box 5 with bolt.When transformer is worked, oil is met and is upwards flowed after heat heats up, excessive pipe 8 through the upper end flows to oil collecting pipe 6, flows to oil collection box 9 again, flows to the import and export 11,12 of the fin 2 on both sides from oil collection box 9, by fin 2 heat radiations, cooled oil flows downward, from the flow through oil collection box 9 of lower end of the oil-out 12 of fin 2, again by the oil collecting pipe 6 of lower end and excessively pipe 8 enter oil box 5, so constantly circulate, make transformer reach the purpose of heat radiation.

Claims

1, a kind of radiator for transformer, have fin, oil collecting pipe, oil collection box, oil box, case lid and foot rest, it is characterized in that, fin wherein (2) is inner edge welding, outer rim is bent into the hollow plates of circular arc, these plates are made two biserials at least and are arranged, and the centre is provided with air duct; Be combined into one group of groups of fins by some fin (2), being docked and connected by oil-in (11) and oil-out (12) and oil collection box (9) up and down respectively up and down of this groups of fins; Described radiator is made up of two groups of groups of fins at least.

2, according to the described radiator for transformer of claim 1, it is characterized in that, oil collecting pipe wherein (6) is a pipe or square tube, and this pipe is connected on the oil collection box (9), and described oil collecting pipe (6) has several slotted holes (13) that docks with the aperture (10) of oil collection box (9).

3, according to claim 1 or 2 described radiator for transformer, it is characterized in that, oil collection box wherein (9) takes the shape of the letter U, and the aperture (10) of docking with oil collecting pipe (6) that its top is offered forms oil flows to both sides fin (2) through oil collection box (9) from oil collecting pipe (6) passage.